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Andrej [43]
3 years ago
15

the values of a set can be represented by the expression x, 2x, 4x, and 5x. Write the data set for x=3 and find the mean

Mathematics
1 answer:
Irina18 [472]3 years ago
7 0
X = 3
2x=6
4x=12
5x=15
--------
36
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The triangles below are congruent, with △ABC ≅ △DEF. The following lengths are given in centimeters: AB⎯⎯⎯⎯⎯ = x + 1, AC⎯⎯⎯⎯⎯ =
stiks02 [169]

Answer:

It is Def because in a game Def means defend

Step-by-step explanation:

5 0
2 years ago
5x + 10 = 20
Andrei [34K]

To solve for <em>x</em>, we must first isolate the term containing <em>x</em> which in this problem is 5x.

Since 10 is being added to 5x, we subtract 10 from both sides of the equation to isolate the 5x.

On the left, the +10 and -10 cancel out and on the right, 20 - 10 is 10 and we have 5x = 10.

Now we can finish things off by just dividing both sides of the equation by 5. On the left the 5's cancel and on the right, 10 divided by 5 is 2 so <em>x = 2</em>.

4 0
3 years ago
Help please!!!! Will mark b for right answer
Ronch [10]

Answer:

35

Step-by-step explanation:

2x+1=71

71-1=70

70÷2=35

therefore x must be 35

5 0
2 years ago
Read 2 more answers
What is the least amount of wrapping paper needed to wrap a gift box that measures 8 inches by 8 inches by 10 inches. Explain
frozen [14]

448 square inches.

The surface area of the box is 448 square inches so that is the least amount of paper needed to cover the box.

4 0
3 years ago
Let f:X → Y, where X and Y are the set of all real numbers, and x and h are real numbers.
Shkiper50 [21]

Answer:

a) f(x) = x^2

b) f(x) = x

c) any pair of numbers

Step-by-step explanation:

HI!

a)

an example of this kind of function is f(x) = x^2 because

f(x+h) = (x+h)^2 = x^2 + h^2 + 2 xh = f(x) + f(h) + 2xh

teherfore

f(x+h) ≠ f(x) + f(h)

other example is f(x) = x^n with n a whole number different than one

e.g.

f(x)=x^3

f(x+h) = (x+h)^3 = x^3 + h^3 + 3(x^2 h + x h^2) ≠ x^3 + h^3 = f(x) + f(h)

b)

f(x) = x is a function that actually behaves as indicated

f(x+h) = x + h = f(x) + f(h)

others examples of this kind of fucntion are given by multiplying x by any number:

f(x) = ax;    f(x+h) = a(x+h) = ax + ah = f(x) + f(h)

c)

Any pair of numbers will make f(x+h) = f(x) + f(h), as mentioned in the previous section

lest consider 10 and 5

f(10+5) = 2 *(10+5) = 2*15 = 30

f(10) = 2*10 = 20

f(5) = 2*5 = 10

f(10) + f(5) = 20+10 = 30 = f(10+5)

5 0
2 years ago
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